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Implantation occurs during the _____ of developing embryo.
Cells are the embryo divide by _____ during cleavage
Fusion of the nuclei of egg and sperm is called
The developing embryo is female so the sperm contributes _____ chromosome
At the time of implantation the ovum consists of about _______
100 cells and is same size
______ is considered the most advanced stage compared to morula and zygote.
_____ develops from embryonic chorion and mothers uterine tissue.
Trophoblast prevent menstruation by releasing _____ hormone
______ helps in the contractions of the myometrium of the uterus.
______ undergoes dilation during the first stage of labor
______ secretion is initiated by sucking action of the infant
______ sustains the production of milk even after birth.
_______ division aids in reducing the diploid to haploid number of chromosomes
Normal chromosomal number in the sperm and egg is
XO leads to _______ syndrome
Teratogen shows its effect normally during the_______
The internal layer of the GI tract is formed from
The inner cell mass of the embryo during early stages forms the
An extra autosome in the genome causes _____ syndrome.
The sex of an individual is established at _____
Fertilization or conception
Nutrition of the developing fetus is provided by